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Lewis & Clark as Naturalists
The Collection: Locality Information Lewis and Clark as Naturalists
plants

President Jefferson wanted Meriwether Lewis to know more about observing and collecting plants before he left on the westward journey. He sent Lewis to Philadelphia to take crash courses in all the important sciences, including botany.
Lewis' Philadelphia education proved valuable after all. He learned how to identify and collect plants, and he gained the vocabulary needed to describe plants. Of the plant collections that survived the journey, 94 were new to science.
Another side to the plant story is the great deal of scientific study that came in the years following the expedition. Besides Lewis, six other men recorded new plants and the wildly exotic landscape in their journals. Their descriptions had an invigorating effect on the publishing of new plants collected in the West. But there is another side to the plant story. The trees, shrubs and wildflowers seen by the expedition were a source of great beauty and wonder. That beauty inspired some of the richest and most eloquent prose found in their journals ... to which the information on this site would most certainly attest.


Species Common Name
Abies grandis (Dougl. ex D.Don) Lindl. grand fir
Abies lasiocarpa (Hook.) Nutt. subalpine fir
Acer circinatum Pursh vine maple
Acer glabrum Torr. Rocky Mountain maple
Acer macrophyllum Pursh bigleaf maple
Achillea millefolium L. var. occidentalis DC. western yarrow
Allium geyeri S.Wats. Geyer's onion
Allium tolmiei (Hook.) Baker ex S.Wats. Tolm's onion
Alnus rhombifolia Nutt. white alder
Alnus rubra Bong. red alder
Alnus viridis (Vill.) Lam. ssp. sinuata (Regel) A.&D. Love Sitka alder
Amelanchier alnifolia (Nutt.) Nutt. ex M.Roemer Saskatoon serviceberry
Amorpha fruticosa L. desert false indigo
Ampelopsis cordata Michx. heartleaf peppervine
Amsinckia menziesii (Lehm.) A.Nelson & J.F.Macbr. var. retrorsa (Suksd.) Reveal & Schuyler Menzies' fiddleneck
Andropogon gerardii Vitman big bluestem
Anemone canadensis L. Canadian anemone
Anemone piperi Britt. ex Rydb. Piper's anemone
Angelica arguta Nutt. Lyall's angelica
Aquilegia canadensis L. red columbine
Aquilegia formosa Fisch. ex DC. western columbine
Arbutus menziesii Pursh Pacific madrone
Arctostaphylos uva-ursi (L.) Spreng. bearberry, kinnikinnick
Argentina egedii (Wormsk.) Rydb. Pacific cinquefoil
Artemisia campestris L. ssp. caudata (Michx.) H.M.Hall&Clem. field sagewort
Artemisia cana Pursh purple sagebrush
Artemisia dracunculus L. tarragon
Artemisia frigida Willd. prairie sagewort
Artemisia longifolia Nutt. longleaved wormwood
Artemisia ludoviciana Nutt. white sagebrush
Artemisia tridentata Nutt. big sagebrush
Asarum caudatum Lindl. British Columbia wildginger
Asimina triloba (L.) Dunal pawpaw
Astragalus canadensis L. Canadian milkvetch
Astragalus crassicarpus Nutt. groundplum milkvetch
Astragalus missouriensis Nutt. Missouri milkvetch
Atriplex canescens (Pursh) Nutt. fourwing saltbush
Atriplex gardneri (Moq.) D.Dietr. Gardner's saltbush
Balsamorhiza sagittata (Pursh) Nutt. arrowleaf balsamroot
Bazzania trilobata (L.) Gray liverwort
Betula occidentalis Hook. water birch
Betula papyrifera Marsh. paper birch
Blechnum spicant (L.) Sm. deer fern
Bromus marginatus Nees ex Steud. mountain brome
Calochortus elegans Pursh elegant mariposa lily
Calypso bulbosa (L.) Oakes fairy slipper
Calystegia sepium (L.) R. Br. ssp. sepium hedge false bindweed
Camassia quamash (Pursh) Greene small camas
Cammisonia subacaulis (Pursh) Raven diffuseflower evening primrose
Cardamine nuttallii Greene Nuttall's toothwort
Ceanothus sanguineus Pursh redstem ceanothus
Ceanothus velutinus Dougl. ex Hook. snowbrush ceanothus
Cerastium arvense L. field chickweed
Chamaecrista fasciculata (Michx.) Greene var. fasciculata sleepingplant
Chrysothamnus viscidiflorus (Hook.) Nutt. yellow rabbitbrush
Cirsium edule Nutt. edible thistle
Clarkia pulchella Pursh pinkfairies, ragged robin
Claytonia lanceolata Pall. ex Pursh lanceleaf springbeauty
Claytonia parviflora Dougl. ex Hook. streambank springbeauty
Claytonia perfoliata Donn ex Willd. miner's lettuce
Claytonia sibirica L. Siberian springbeauty
Clematis hirsutissima Pursh hairy clematis
Cleome serrulata Pursh Rocky Mountain bee plant
Collinsia grandiflora Lindl. giant blue eyed Mary
Collomia linearis Nutt. tiny trumpet
Coreopsis tinctoria Nutt. var. atkinsoniana (Dougl. ex Lindl.) H.M.Parker ex E.B.Sm. Atkinson's tickseed
Cornus canadensis L. bunchberry dogwood
Cornus nuttallii Audubon ex Torr.& Gray Pacific dogwood
Corylus cornuta Marsh. beaked hazlenut
Crataegus douglasii Lindl. black hawthorn
Cypripedium montanum Dougl. ex Lindl. mountain lady's slipper
Dalea purpurea Vent. violet prairie clover
Dasiphora fruticosa (L.) Rydb. shrubby cinquefoil
Delphinium menziesii DC. Menzies' larkspur
Desmanthus illinoensis (Michx.) MacM. ex B.L. Robins. & Fern. prairie bundleflower
Dodecatheon poeticum L.F. Hend. poet's shootingstar
Dryopteris carthusiana (Vill.) H.P.Fuchs spinulose woodfern
Echinacea angustifolia DC. blacksamson echinacea
Elaeagnus commutata Bernh. ex Rydb. silverberry
Elymus canadensis L. Canada wildrye
Elymus virginicus L. Virginia wildrye
Equisetum arvense L. field horsetail
Ericameria nauseosa (Pall. ex Pursh) Nesom & Baird rubber rabbitbrush
Ericameria nauseosa var. graveolens (Nutt.) Reveal & Schuyler smooth rubber rabbitbrush
Erigeron compositus Pursh cutleaf daisy
Eriophyllum lanatum (Pursh) Forbes common woolly sunflower
Erysimum capitatum (Dougl. ex Hook.) Greene sanddune wallflower
Erythronium grandiflorum Pursh yellow avalanche-lily
Euphorbia cyathophora Murray fire on the mountain
Euphorbia marginata Pursh snow on the mountain
Festuca idahoensis Elmer Idaho fescue
Frangula purshiana (DC.) Cooper Pursh's buckthorn
Frasera fastigiata (Pursh) Heller clustered green gentian
Fraxinus latifolia Benth. Oregon ash
Fritillaria affinis (Schultes) Sealy checker lily
Fritillaria pudica (Pursh) Spreng. yellow fritillary
Gaillardia aristata Pursh common gaillardia
Gaultheria shallon Pursh salal, shallon
Geum triflorum Pursh old man's whiskers
Grindelia squarrosa (Pursh) Dunal curlycup gumweed
Gutierrezia sarothrae (Pursh) Britt. & Rusby broom snakeweed
Helianthus tuberosus L. Jerusalem artichoke
Heracleum maximum Bartr. common cowparsnip
Hesperostipa comata (Trin. & Rupr.) Barkworth needle and thread
Holodiscus discolor (Pursh) Maxim. oceanspray
Hordeum jubatum L. foxtail barley
Hydrastis canadensis L. goldenseal
Ipomopsis aggregata (Pursh) V.Grant scarlet gilia
Iris missouriensis Nutt. Rocky Mountain iris
Juniperus communis L. var. depressa Pursh common juniper
Juniperus horizontalis Moench creeping juniper
Juniperus scopulorum Sarg. Rocky Mountain juniper
Koeleria macrantha (Ledeb.) J.A.Schultes prairie Junegrass
Larix occidentalis Nutt. western larch
Lewisia rediviva Pursh bitter root
Leymus condensatus (J.Presl) A.Love giant wildrye
Leymus mollis (Trin.) Pilger American dunegrass
Liatris aspera Michx. tall blazing star
Liatris pycnostachya Michx. prairie blazing star
Linum lewisii Pursh prairie flax
Lomatium ambiguum (Nutt.) Coult. & Rose Wyeth's biscuit root
Lomatium cous (S.Wats.) Coult. & Rose cous biscuitroot
Lomatium cuspidatum Mathias & Constance Wenatchee desert parsley
Lomatium dissectum (Nutt.) Mathias & Constance fernleaf biscuitroot
Lomatium nudicaule (Pursh) Coult. & Rose barestem biscuitroot
Lomatium triternatum (Pursh) Coult. & Rose nineleaf biscuitroot
Lonicera ciliosa (Pursh) Poir. ex DC. orange honeysuckle
Lonicera involucrata Banks ex Spreng. twinberry honeysuckle
Lonicera utahensis S.Wats. Utah honeysuckle
Lupinus argenteus Pursh silvery lupine
Lupinus littoralis Dougl. seashore lupine
Lupinus sericeus Pursh silky lupine
Machaeranthera canescens (Pursh) A.Gray var. incana (Lindl.) A.Gray hoary tansyaster
Machaeranthera pinnatifida (Hook.) Shinners lacy tansyaster
Maclura pomifera (Raf.) Schneid. Osage orange
Mahonia aquifolium (Pursh) Nutt. hollyleaved barberry
Mahonia nervosa (Pursh) Nutt. Cascade barberry
Mahonia repens (Lindl.) G.Don creeping barberry
Malus fusca (Raf.) Schneid. Oregon crabapple
Matricaria matricarioides (Less.) Porter disc mayweed
Mentzelia decapetala (Pursh ex Sims) Urban & Gilg. ex Gilg. tenpetal blazingstar
Mimulus guttatus DC. seep monkeyflower
Mimulus lewisii Pursh purple monkeyflower
Mirabilis nyctaginea (Michx.) MacMill. heartleaf four o'clock
Montia linearis (Doug. ex Hook.) Greene narrowleaf minerslettuce
Nicotiana quadrivalvis Pursh Indian tobacco
Oenothera caespitosa Nutt. tufted evening-primrose
Oligoneuron rigidum (L.) Small var. humile (Porter) Nesom stiff goldenrod
Opuntia fragilis (Nutt.) Haw. brittle pricklypear
Opuntia polyacantha Haw. plains pricklypear
Orthocarpus tenuifolius (Pursh) Benth. thinleaved owl's-clover
Oxalis oregana Nutt. Oregon wood-sorrell, redwood sorrell
Oxytropis besseyi (Rydb.) Blank. Bessey's locoweed
Paxistima myrsinites (Pursh) Raf. Oregon boxleaf
Pedicularis cystopteridifolia Rydb. fernleaved pedicularis
Pedicularis groenlandica Retz. elephanthead lousewort
Pediomelum argophyllum (Pursh) J. Grimes silverleaf Indian breadroot
Pediomelum esculentum (Pursh) Rydb. large Indian breadroot
Penstemon fruticosus (Pursh) Greene bush penstemon
Penstemon wilcoxii Rydb. Wilcox's beardtongue
Perideridia gairdneri (Hook & Arn.) Mathias Gairdner's yampah
Phacelia heterophylla Pursh varileaf phacelia
Phacelia linearis (Pursh) Holz. threadleaf phacelia
Phalaris arundinacea L. reed canarygrass
Philadelphus lewisii Pursh Lewis' mock orange
Phlox speciosa Pursh showy phlox
Picea engelmannii Parry ex Engelm. Engelmann spruce
Picea sitchensis (Bong.) Carr. Sitka spruce
Pinus albicaulis Engelm. whitebark pine
Pinus contorta Dougl. ex Loud. lodgepole pine
Pinus monticola Dougl. ex D.Don western white pine
Pinus ponderosa P.&C. Lawson ponderosa pine
Plagiobothrys tenellus (Nutt. ex Hook.) Gray Pacific popcornflower
Poa secunda J.Presl Sandberg bluegrass
Polanisia dodecandra (L.) DC. ssp. trachysperma (Torr.&Gray) Iltis sandyseed clammyweed
Polemonium pulcherrimum Hook. Jacob's ladder
Polygala alba Nutt. white milkwort
Polygonum bistortoides Pursh American bistort
Populus angustifolia James narrowleaved cottonwood
Populus balsamifera L. ssp. trichocarpa black cottonwood
Populus deltoides Bartr. ex Marsh. ssp. monilifera (Ait.) Eckenw. plains cottonwood
Prunus emarginata (Dougl. ex Hook.) Walp. bitter cherry
Prunus virginiana L. chokecherry
Pseudoroegneria spicata (Pursh) A. Love bluebunch wheatgrass
Pseudotsuga menziesii (Mirb.) Franco Douglas fir
Psoralidium lanceolatum (Pursh) Rydb. lemon scurfpea
Psoralidium tenuiflorum (Pursh) Rydb. slimflower scurfpea
Pteridium aquilinum (L.) Kuhn western brackenfern
Purshia tridentata (Pursh) DC. antelope bitterbush
Quercus garryana Dougl. ex Hook. Oregon white oak
Quercus macrocarpa Michx. bur oak
Rhododendron macrophyllum D.Don ex G.Don Pacific rhododendron
Rhus trilobata Nutt. skunkbush sumac
Ribes americanum P. Mill. American black currant
Ribes aureum Pursh golden currant
Ribes cereum Dougl. wax currant
Ribes divaricatum Dougl. spreading gooseberry
Ribes sanguineum Pursh redflower currant
Ribes viscosissimum Pursh sticky currant
Rorippa sinuata (Nutt.) A.S. Hitchc. spreading yellowcress
Rosa arkansana Porter prairie rose
Rosa nutkana K.Presl Nootka rose
Rosa pisocarpa Gray cluster rose
Rosa woodsii Lindl. Wood's rose
Rubus parviflorus Nutt. thimbleberry
Rubus spectabilis Pursh salmonberry
Rubus vitifolius Cham. & Schlecht. Pacific dewberry
Sagittaria latifolia Willd. broadleaf arrowhead, wapato
Salix sp. slender willow
Salix amygdaloides Anderss. peach-leaved willow
Salix interior Rowlee sandbar willow
Salvia reflexa Hornem. lanceleaf sage
Sambucus nigra L. ssp. caerulea (Raf.) R.Bolli blue elderberry
Sarcobatus vermiculatus (Hook.) Torr. greasewood
Scutellaria angustifolia Pursh narrowleaf skullcap
Sedum lanceolatum Torr. spearleaf stonecrop
Sedum stenopetalum Pursh wormleaf stonecrop
Shepherdia argentea (Pursh) Nutt. silver buffaloberry, rabbitberry
Sorbus scopulina Greene Greene's mountain ash
Sorbus sitchensis M.Roemer western mountain ash
Sphaeralcea coccinea (Nutt.) Rydb. scarlet globemallow
Sphaeromeria argentea Nutt. silver chickensage
Symphoricarpos albus (L.) Blake common snowberry
Symphoricarpos occidentalis Hook. western snowberry
Symphyotrichum eatonii (Gray) Nesom Eaton's aster
Symphyotrichum oblongifolium (Nutt.) Nesom aromatic aster
Synthyris missurica (Raf.) Pennell tailed kittentails
Taxus brevifolia Nutt. Pacific yew
Thlaspi arvense L. field pennycress
Thuja plicata Donn ex D.Don western red cedar
Trifolium macrocephalum (Pursh) Poir. largehead clover
Trifolium microcephalum Pursh smallheaded clover
Trillium ovatum Pursh Pacific trillium
Trillum petiolatum Pursh Idaho trillium
Triteleia grandiflora Lindl. largeflower triteleia, wild hyacinth
Tsuga mertensiana (Bong.) Carr. mountain hemlock
Ulmus americana L. American elm
Uropappus lindleyi (DC.) Nutt. Lindley's silverpuffs
Urtica dioica L. ssp. gracilis (Ait.)Seland. California nettle
Vaccinium membranaceum Dougl. ex Torr. thinleaf huckleberry
Vaccinium myrtillus L. whortleberry
Vaccinium ovatum Pursh evergreen huckleberry, California huckleberry
Vaccinium uliginosum L. bog blueberry
Veratrum californicum Dur. California false hellebore
Xerophyllum tenax (Pursh) Nutt. common beargrass
Zigadenus elegans Pursh mountain deathcamas
Zizania palustris L. var. interior (Fassett) Dore northern wildrice

Image Display <EM>Gaultheria shallon </EM>Pursh
Gaultheria shallon Pursh


 
 
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